C1111233131211111211113313331333133313232321333133313232233132312213111   >>    C111123313121111121111331333133313331323232133313331323223313231221311   <<    C1111233131211111211113313331333133313232321333133313232233132312213113   >>      C1111233131211111211113313331333133313232321333133313232233132312213112   >>