import sys
input = lambda : sys.stdin.readline().rstrip()
sys.setrecursionlimit(max(1000, 10**9))
write = lambda x: sys.stdout.write(x+"\n")

    
n,k = list(map(int, input().split()))
s = input()
c = 1 # 0の個数
dp = [None]*(n)
dp[n-1] = 0
for i in range(n-2,0,-1):
    if s[i]=="x":
        v = 0
    else:
        if c>0:
            v = 1
        else:
            v = 0
    dp[i] = v
    if v==0:
        c += 1
    if i+k<n and dp[i+k]==0:
        c -= 1
if c==0:
    print(0)
else:
    for i in range(1,k+1):
        if dp[i]==0:
            print(i)