import sys
input = sys.stdin.readline

class SegmentTree:
    def __init__(self,
                n,
                identity_e,
                combine_f,
                ):
        self._n = n
        self._size = 1
        while self._size < self._n:
            self._size <<= 1
        self._identity_e = identity_e
        self._combine_f = combine_f
        self._node = [self._identity_e] * (2 * self._size)

    def build(self, array):
        assert len(array) == self._n
        for index, value in enumerate(array, start=self._size):
            self._node[index] = value
        for index in range(self._size - 1, 0, -1):
            self._node[index] = self._combine_f(
                self._node[index << 1 | 0],
                self._node[index << 1 | 1]
            )

    def update(self, index, value):
        i = self._size + index
        self._node[i] = value
        while i > 1:
            i >>= 1
            self._node[i] = self._combine_f(
                self._node[i << 1 | 0],
                self._node[i << 1 | 1]
            )

    def fold(self, L, R):
        L += self._size
        R += self._size
        value_L = self._identity_e
        value_R = self._identity_e
        while L < R:
            if L & 1:
                value_L = self._combine_f(value_L, self._node[L])
                L += 1
            if R & 1:
                R -= 1
                value_R = self._combine_f(self._node[R], value_R)
            L >>= 1
            R >>= 1
        return self._combine_f(value_L, value_R)

    def __str__(self):
        temp = []
        for i in range(self._n):
            temp.append(str(self.fold(i, i + 1)))
        return ' '.join(temp)
    

N, L, Q = map(int, input().split())
base = 4649
mod = 10007
p = [1] * (L + 1)
for i in range(L):
    p[i + 1] = p[i] * base % mod

def op(x, y):
    x0, x1 = divmod(x, base)
    y0, y1 = divmod(y, base)
    a = (x0 * p[y1] + y0) % mod
    b = x1 + y1
    return a*base+b

T = [SegmentTree(L + 1, 0, op) for i in range(N)]
S = []
for i in range(N):
    S.append(list(input().rstrip()))
    for j in range(L):
        T[i].update(j, (ord(S[i][j]) - ord("a"))*base + 1)
        
for q in range(Q):
    query = list(input().split())
    if query[0] == "1":
        b, c, d = query[1:]
        b = int(b) - 1
        for i in range(N):
            if S[i][b] == c:
                S[i][b] = d
                T[i].update(b, (ord(d) - ord("a"))*base + 1)
    else:
        b = query[1]
        v = 0
        for c in b:
            v *= base
            v += ord(c) - ord("a")
            v %= mod
        ans = 0
        for i in range(N):
            if v == T[i].fold(0, len(b))//base:
                ans += 1
        print(ans)