import sys
readline=sys.stdin.readline
from functools import lru_cache

HW=list(map(int,readline().split()))
for i in range(8):
    HW[i]-=4
H,W=HW[:4],HW[4:]
mod=998244353
@lru_cache(maxsize=None)
def solve(H,W):
    for h in H:
        if h<0:
            return 0
    for w in W:
        if w<0:
            return 0
    if all(h==0 for h in H) and all(w==0 for w in W):
        return 1
    retu=0
    for bit in range(1<<16):
        HH=[H[h]-sum(bit>>h*4+w&1 for w in range(4)) for h in range(4)]
        WW=[W[w]-sum(bit>>h*4+w&1 for h in range(4)) for w in range(4)]
        if all(h>=0 and h%2==0 for h in HH) and all(w>=0 and w%2==0 for w in WW):
            for i in range(4):
                HH[i]>>=1
                WW[i]>>=1
            retu+=solve(tuple(HH),tuple(WW))
            retu%=mod
    return retu
ans=solve(tuple(H),tuple(W))
print(ans)