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#include <iostream>
#include <unordered_map>
#include <vector>
#include <string>


using namespace std;


struct Move
{
    char m_cType;
    char m_cColor;
    int  m_iNum;
};


struct LineSummary
{
    unordered_map<char, int> m_mapCnts;  // key: color; value: number of occurrences
};


static int iRows, iCols, iFirstRow, iLastRow, iFirstCol, iLastCol;

static vector<Move> vAnswers;

static vector<LineSummary> vRowSummaries, vColSummaries;

static char aBrd[2048][2048];


static void ReadData()
{
    cin >> iRows >> iCols;

    string s;

    for (int i = 0; i < iRows; ++i)
    {
        cin >> s;

        for (int j = 0; j < iCols; ++j)
        {
            aBrd[i][j] = s[j];
        }
    }
}


static void FillRowSummaries()
{
    for (int i = 0; i < iRows; ++i)
    {
        LineSummary ls;

        for (int j = 0; j < iCols; ++j)
        {
            char cColor = aBrd[i][j];

            ls.m_mapCnts[cColor]++;
        }

        vRowSummaries.push_back(ls);
    }
}


static void FillColSummaries()
{
    for (int j = 0; j < iCols; ++j)
    {
        LineSummary ls;

        for (int i = 0; i < iRows; ++i)
        {
            char cColor = aBrd[i][j];

            ls.m_mapCnts[cColor]++;
        }

        vColSummaries.push_back(ls);
    }
}


static void Init()
{
    FillRowSummaries();
    FillColSummaries();

    iFirstRow = 0;
    iLastRow = iRows - 1;
    iFirstCol = 0;
    iLastCol = iCols - 1;
}


static void AddAnswer(char cType, int iNum, char cColor)
{
    Move mv;

    mv.m_cType = cType;
    mv.m_iNum = iNum + 1;
    mv.m_cColor = cColor;

    vAnswers.push_back(mv);
}


static void DeleteRow(int iRow)
{
    for (int j = iFirstCol; j <= iLastCol; ++j)
    {
        char cColor = aBrd[iRow][j];

        LineSummary & ls = vColSummaries[j];

        if (ls.m_mapCnts.count(cColor) == 0)
            continue;

        if (ls.m_mapCnts[cColor] == 1)
        {
            ls.m_mapCnts.erase(cColor);
            continue;
        }

        ls.m_mapCnts[cColor]--;
    }
}


static void DeleteColumn(int iCol)
{
    for (int i = iFirstRow; i <= iLastRow; ++i)
    {
        char cColor = aBrd[i][iCol];

        LineSummary & ls = vRowSummaries[i];

        if (ls.m_mapCnts.count(cColor) == 0)
            continue;

        if (ls.m_mapCnts[cColor] == 1)
        {
            ls.m_mapCnts.erase(cColor);
            continue;
        }

        ls.m_mapCnts[cColor]--;
    }
}


static bool TryRemoveOnTheEdges()
{
    if (vRowSummaries[iFirstRow].m_mapCnts.size() == 0)
    {
        iFirstRow++;
        return true;
    }

    if (vRowSummaries[iLastRow].m_mapCnts.size() == 0)
    {
        iLastRow--;
        return true;
    }

    if (vColSummaries[iFirstCol].m_mapCnts.size() == 0)
    {
        iFirstCol++;
        return true;
    }

    if (vColSummaries[iLastCol].m_mapCnts.size() == 0)
    {
        iLastCol--;
        return true;
    }

    if (vRowSummaries[iFirstRow].m_mapCnts.size() == 1)
    {
        AddAnswer('R', iFirstRow, vRowSummaries[iFirstRow].m_mapCnts.begin()->first);
        DeleteRow(iFirstRow);
        iFirstRow++;
        return true;
    }

    if (vRowSummaries[iLastRow].m_mapCnts.size() == 1)
    {
        AddAnswer('R', iLastRow, vRowSummaries[iLastRow].m_mapCnts.begin()->first);
        DeleteRow(iLastRow);
        iLastRow--;
        return true;
    }

    if (vColSummaries[iFirstCol].m_mapCnts.size() == 1)
    {
        AddAnswer('K', iFirstCol, vColSummaries[iFirstCol].m_mapCnts.begin()->first);
        DeleteColumn(iFirstCol);
        iFirstCol++;
        return true;
    }

    if (vColSummaries[iLastCol].m_mapCnts.size() == 1)
    {
        AddAnswer('K', iLastCol, vColSummaries[iLastCol].m_mapCnts.begin()->first);
        DeleteColumn(iLastCol);
        iLastCol--;
        return true;
    }

    return false;
}


static bool TryRemoveRowInTheMiddle()
{
    for (int i = iFirstRow + 1; i < iLastRow; ++i)
    {
        if (vRowSummaries[i].m_mapCnts.size() == 1)
        {
            AddAnswer('R', i, vRowSummaries[i].m_mapCnts.begin()->first);

            vRowSummaries[i].m_mapCnts.clear();

            DeleteRow(i);
            return true;
        }
    }

    return false;
}


static bool TryRemoveColumnInTheMiddle()
{
    for (int i = iFirstCol + 1; i < iLastCol; ++i)
    {
        if (vColSummaries[i].m_mapCnts.size() == 1)
        {
            AddAnswer('K', i, vColSummaries[i].m_mapCnts.begin()->first);

            vColSummaries[i].m_mapCnts.clear();

            DeleteColumn(i);
            return true;
        }
    }

    return false;
}


static bool TryRemoveInTheMiddle()
{
    if (TryRemoveRowInTheMiddle())
        return true;

    if (TryRemoveColumnInTheMiddle())
        return true;

    return false;
}


static void Solve()
{
    while (iFirstRow <= iLastRow && iFirstCol <= iLastCol)
    {
        if (TryRemoveOnTheEdges())
        {
            continue;
        }

        if (TryRemoveInTheMiddle())
        {
            continue;
        }

        break;
    }
}


static void PrintOutput()
{
    cout << vAnswers.size() << endl;

    for (auto it = vAnswers.crbegin(); it != vAnswers.crend(); ++it)
    {
        cout << it->m_cType << " " << it->m_iNum << " " << it->m_cColor;

        if (it != vAnswers.crend() - 1)
        {
            cout << endl;
        }
    }
}


int main()
{
    ReadData();
    Init();
    Solve();
    PrintOutput();
}