def task(s1,s2):
w1=s1.split(' ')
w2=s2.split(' ')
res=[]
for ww in w1:
if (ww in w2) and (ww != ''):
res+=[ww]
return res
print(task("as hd d dd","sd hd aw d ii"))
ZGVmIHRhc2soczEsczIpOgoJdzE9czEuc3BsaXQoJyAnKQoJdzI9czIuc3BsaXQoJyAnKQoJcmVzPVtdCglmb3Igd3cgaW4gdzE6CgkJaWYgKHd3IGluIHcyKSBhbmQgKHd3ICE9ICcnKToKCQkJcmVzKz1bd3ddCglyZXR1cm4gcmVzCgkKcHJpbnQodGFzaygiYXMgIGhkIGQgZGQiLCJzZCBoZCBhdyAgZCBpaSIpKQ==