C11112331312111112111133132313331333133313232213231323131133133313222221   >>    C1111233131211111211113313231333133313331323221323132313113313331322222   <<    C11112331312111112111133132313331333133313232213231323131133133313222223   >>      C11112331312111112111133132313331333133313232213231323131133133313222222   >>