C3132121111133313233121111331333133313331333133313331333133313113313132322121   >>    C313212111113331323312111133133313331333133313331333133313331311331313232212   <<    C3132121111133313233121111331333133313331333133313331333133313113313132322123   >>      C3132121111133313233121111331333133313331333133313331333133313113313132322122   >>