data = open("input.txt", 'r').read()

stacks, instructions = data.split("\n\n")
stacks = stacks.splitlines()
instructions = [i.split(" ") for i in instructions.splitlines()]
s = []

for i in range(int(stacks[-1][-2])):
    s.append([])
    for j in range(len(stacks)-1):
        crate = stacks[-j-2][i*4+1]
        if crate != " ":
            s[i].append(crate)

for i in instructions:
    for j in range(int(i[1])):
        s[int(i[5])-1].append(s[int(i[3])-1].pop())
    

print("".join([t.pop() for t in s]))