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import sys,re
# m is char, n is str
# m is 0 or 1
# n is sequence that only contains A and B
# avoid using regex here.
#def ifmatching(m,n):
# if not n or not m:
# return False
# if m=='0':
# if 'B' not in n:
# return True
# return False
# if m=='1':
# if 'B' not in n or 'A' not in n:
# return True
# return False
# return False
def ifmatching(m,n):
if not n or not m:
return False
if 'B' not in n:
return True
if 'A' in n:
return False
if m=='1':
return True
return False
test_cases = open(sys.argv[1], 'r')
for test in test_cases:
s1,s2=test.strip().split(' ')
x,y=len(s1),len(s2) #x is length of 1st argument, y is 2nd.
if x>y or x<1 or y<1:
print "No"
continue
# mtx initilized as 0 all.
mtx=[[0 for col in range(y)] for row in range(x)]
# init mtx[0], 1st row, check s1[0] if matching s2[0-?]
for j in range(y-x+1):
if ifmatching(s1[0],s2[:j+1]):
mtx[0][j]=1
for i in range(1,x):
for j in range(i,y-x+1+i):
# set mtx[i][j]
for k in range(i-1,j):
if mtx[i-1][k]:
if ifmatching(s1[i],s2[k+1:j+1]):
mtx[i][j]=1
break
print "Yes" if mtx[x-1][y-1] else "No"
test_cases.close()