C11112331312111112111133133313331333133313122111133133313113313221323211   >>    C1111233131211111211113313331333133313331312211113313331311331322132321   <<    C11112331312111112111133133313331333133313122111133133313113313221323213   >>      C11112331312111112111133133313331333133313122111133133313113313221323212   >>