C11111211113313112113313331333133313331333132322121111121111331333133313222231   >>    C1111121111331311211331333133313331333133313232212111112111133133313331322223   <<    C11111211113313112113313331333133313331333132322121111121111331333133313222233   >>      C11111211113313112113313331333133313331333132322121111121111331333133313222232   >>