C11111333133313232233133313331333133313231312111133131121211113313331322112121   >>    C1111133313331323223313331333133313331323131211113313112121111331333132211212   <<    C11111333133313232233133313331333133313231312111133131121211113313331322112123   >>      C11111333133313232233133313331333133313231312111133131121211113313331322112122   >>