C111123313331323113313331333133313331122112312111112111112111113331313211   >>    C11112331333132311331333133313331333112211231211111211111211111333131321   <<    C111123313331323113313331333133313331122112312111112111112111113331313213   >>      C111123313331323113313331333133313331122112312111112111112111113331313212   >>