C11111333133313232233133313331333131133131211113313221211331311233132233131   >>    C1111133313331323223313331333133313113313121111331322121133131123313223313   <<    C11111333133313232233133313331333131133131211113313221211331311233132233133   >>      C11111333133313232233133313331333131133131211113313221211331311233132233132   >>