C11112331312111112111133133313331311331323212331333131133132221   >>    C1111233131211111211113313331333131133132321233133313113313222   <<    C11112331312111112111133133313331311331323212331333131133132223   >>      C11112331312111112111133133313331311331323212331333131133132222   >>