C1111233131211111211113313331333133313232321333133313331313213112233231   >>    C111123313121111121111331333133313331323232133313331333131321311223323   <<    C1111233131211111211113313331333133313232321333133313331313213112233233   >>      C1111233131211111211113313331333133313232321333133313331313213112233232   >>