C11111333133313232233133313331333133313231312111111331311233321   >>    C1111133313331323223313331333133313331323131211111133131123332   <<    C11111333133313232233133313331333133313231312111111331311233323   >>      C11111333133313232233133313331333133313231312111111331311233322   >>