C11112331312111112111133133313331333133313122111133133313113313223313221   >>    C1111233131211111211113313331333133313331312211113313331311331322331322   <<    C11112331312111112111133133313331333133313122111133133313113313223313223   >>      C11112331312111112111133133313331333133313122111133133313113313223313222   >>