w0=[]
doub=[]
w1=[]

for i in IN[0]:
    w0.append(UnwrapElement(i))
    doub.append(UnwrapElement(i))

for j in IN[1]:
    w1.append(UnwrapElement(j))

for i in range(len(w0)):
    for j in range(len(w1)):
        if w0[i] == w1[j]:
            doub.remove(w0[i])

OUT = doub