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#include <iostream>
#include <vector>
#include <map>
#include <algorithm>

struct Object {
    int index;
    int i;
    std::vector<int> groups;
};

Object buildObject(int index, std::vector<int> groups) {
    Object obj;
    obj.index = index;
    obj.i = index + 1;
    obj.groups = groups;
    return obj;
}

bool shouldProcess(Object& obj) {
    int i=0;
    for (int j=0; j<26; ++j) {
        if (obj.groups[j] != 0) {
            i++;
        }
    }
    return i == 1;
}

bool allEmpty(Object* obj) {
    int i=0;
    for (int j=0; j<26; ++j) {
        if (obj->groups[j] != 0) {
            i++;
        }
    }
    return i == 0;
}

std::vector<Object*> deleteRowOrColumn(std::vector<Object>& c, std::vector<Object>& r, int i, char charToDelete) {
    c.erase(c.begin() + i);
    for (int j = i; j < c.size(); j++) {
        c[j].index--;
    }
    std::vector<Object*> toProcess;
    for (int j = 0; j < r.size(); j++) {
        r[j].groups[charToDelete]--;
        if (r[j].groups[charToDelete] == 0 && shouldProcess(r[j])) {
            toProcess.push_back(&r[j]);
        }
    }
    return toProcess;
}

int getCharToDelete(Object* row) {
    for (int j=0; j<26; ++j) {
        if (row->groups[j] != 0) {
            return j;
        }
    }
    return -1;
}

void print(std::vector<Object>& r, std::vector<Object>& c, std::vector<Object*>& rr, std::vector<Object*>& rc) {
    int pchar = 'P' - 'A';
    for (auto& row : r) {
        std::cout << "Row " << row.i << " " << row.index << " " << row.groups[0] << " " << row.groups[pchar] << std::endl;
    }
    for (auto& column : c) {
        std::cout << "Column " << column.i << " " << column.index <<  " " << column.groups[0] << " " << column.groups[pchar] << std::endl;
    }
    std::cout << "Rows to progress " << rr.size() << std::endl;
    for (Object* row : rr) {
        std::cout << "Row to progress ";
        std::cout << row->i << " " << row->index << " " << row->groups[0] << " " << row->groups[pchar] << std::endl;
    }
    std::cout << "Columns to progress " << rc.size() << std::endl;
    for (Object* column : rc) {
        std::cout << "Column to progress ";
        std::cout << " " << column->i << " " << column->index << " " << column->groups[0] << " " << column->groups[pchar] << std::endl;
    }
    std::cout << std::endl;
}

int main() {    

    int n, m;
    std::cin >> n >> m;
    std::vector<std::string> rows(n);
    for (int i = 0; i < n; i++) {
        std::cin >> rows[i];
    }    
    
    std::vector<std::vector<int>> rowCount(n, std::vector<int>(26, 0)); // assuming ASCII characters
    std::vector<std::vector<int>> columnCount(m, std::vector<int>(26, 0)); // assuming ASCII characters
    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < m; ++j) {
            rowCount[i][rows[i][j] -'A']++;
            columnCount[j][rows[i][j]-'A']++;
        }
    }

    std::vector<Object> rowObjects, columnObjects;
    for (int i = 0; i < n; i++) {
        rowObjects.push_back(buildObject(i, rowCount[i]));
    }
    for (int i = 0; i < m; i++) {
        columnObjects.push_back(buildObject(i, columnCount[i]));
    }

    std::vector<std::string> instructions;
    std::vector<Object*> rowsToProcess, columnsToProcess;
    for (int i=0; i< n; ++i) {
        if (shouldProcess(rowObjects[i])) {
            rowsToProcess.push_back(&rowObjects[i]);
        }
    }
    for (int i=0; i< m; ++i) {
        if (shouldProcess(columnObjects[i])) {
            columnsToProcess.push_back(&columnObjects[i]);
        }
    }
//    
//    print(rowObjects, columnObjects, rowsToProcess, columnsToProcess);
//    
//
    while (!rowsToProcess.empty() || !columnsToProcess.empty()) {
        std::sort(rowsToProcess.begin(), rowsToProcess.end(), [](const Object* a, const Object* b) {
            return a->index < b->index;  // Replace 'index' with the field you want to sort by
        });
        for (int i = rowsToProcess.size() - 1; i >= 0; i--) {
//            std::cout << " row 1" << std::endl;
            Object* row = rowsToProcess[i];
//            std::cout << " row 1" << std::endl;
            rowsToProcess.erase(rowsToProcess.begin() + i);
//            std::cout << " row 1" << std::endl;
            if (allEmpty(row)) {
                break;
            }
            char charToDelete = getCharToDelete(row);
            char c = charToDelete + 'A';
            instructions.push_back("R " + std::to_string(row->i) + " " + c);
            std::vector<Object*> newColumnsToProcess = deleteRowOrColumn(rowObjects, columnObjects, row->index, charToDelete);
            columnsToProcess.insert(columnsToProcess.end(), newColumnsToProcess.begin(), newColumnsToProcess.end());
//            print(rowObjects, columnObjects, rowsToProcess, columnsToProcess);
//            std::cout << " row 1" << std::endl;
        }
        std::sort(columnsToProcess.begin(), columnsToProcess.end(), [](const Object* a, const Object* b) {
            return a->index < b->index;  // Replace 'index' with the field you want to sort by
        });
        for (int i = columnsToProcess.size() - 1; i >= 0; i--) {
            Object* column = columnsToProcess[i];
            columnsToProcess.erase(columnsToProcess.begin() + i);
            if (allEmpty(column)) {
                break;
            }
            char charToDelete = getCharToDelete(column);
//            print(rowObjects, columnObjects, rowsToProcess, columnsToProcess);
            char c = charToDelete + 'A';
            instructions.push_back("K " + std::to_string(column->i) + " " + c);
//            std::cout << " delete column " << column->i << " " << column->index <<  std::endl;
            std::vector<Object*> newRowsToProcess = deleteRowOrColumn(columnObjects, rowObjects, column->index, charToDelete);
//            print(rowObjects, columnObjects, rowsToProcess, columnsToProcess);
            rowsToProcess.insert(rowsToProcess.end(), newRowsToProcess.begin(), newRowsToProcess.end());
//            std::cout << " column 1" << std::endl;
//            print(rowObjects, columnObjects, rowsToProcess, columnsToProcess);
//            std::cout << " column 1" << std::endl;
        }
    }


    std::cout << instructions.size() << std::endl;
    for (auto it = instructions.rbegin(); it != instructions.rend(); ++it) {
        std::cout << *it << std::endl;
    }
    return 0;
}