import clr

inn=IN[0]

listt1=[]
listt2=[]
# создание пустых листов по количеству входных суб.листов
for i in range(0, len(inn)):
    istr = str(i)
    listt1.append(str(list)+istr)
    listt2.append(str(list)+istr)
    listt1[i]=[]
    listt2[i]=[]

for d in range(0, len(inn)):
    for i in range(0, len(inn)):
        if list(set(inn[d]) & set(inn[i])):
            listt1[d].append(list(set(inn[d]) | set(inn[i])))

for i, d in zip(listt1, range(0, len(listt1))):
    for k in i:
        for p in k:
            listt2[d].append(p)

for d in range(0, len(listt1)):
    listt2[d]=sorted(set(listt2[d]))

inn=listt2
for d in range(0, len(inn)):
    for i in range(0, len(inn)):
        if list(set(inn[d]) & set(inn[i])):
            listt1[d].append(list(set(inn[d]) | set(inn[i])))
for i, d in zip(listt1, range(0, len(listt1))):
    for k in i:
        for p in k:
            listt2[d].append(p)

for d in range(0, len(listt1)):
    listt2[d]=sorted(set(listt2[d]))
OUT=listt2