C11111333133313232233133313331333133313231312111133131333132112121   >>    C1111133313331323223313331333133313331323131211113313133313211212   <<    C11111333133313232233133313331333133313231312111133131333132112123   >>      C11111333133313232233133313331333133313231312111133131333132112122   >>