import sys
input = sys.stdin.readline

mod=10**9+7

H,W=list(map(int,input().split()))
S=[input().strip() for i in range(H)]

ANS=0

flag1=1
flag2=1
for i in range(H):
    for j in range(W):

        if (i+j)%2==0:
            if S[i][j]=="1":
                flag1=0
            if S[i][j]=="0":
                flag2=0
        else:
            if S[i][j]=="0":
                flag1=0
            if S[i][j]=="1":
                flag2=0

ANS-=flag1+flag2

score=1
for i in range(H):
    flag1=1
    flag2=1

    for j in range(W):
        if j%2==0:
            if S[i][j]=="1":
                flag1=0
            if S[i][j]=="0":
                flag2=0
        else:
            if S[i][j]=="0":
                flag1=0
            if S[i][j]=="1":
                flag2=0

    score=score*(flag1+flag2)%mod
    
ANS+=score

score=1
for i in range(W):
    flag1=1
    flag2=1

    for j in range(H):
        if j%2==0:
            if S[j][i]=="1":
                flag1=0
            if S[j][i]=="0":
                flag2=0
        else:
            if S[j][i]=="0":
                flag1=0
            if S[j][i]=="1":
                flag2=0

    score=score*(flag1+flag2)%mod

ANS+=score

print(ANS%mod)