C11111333133313232233133313331333133313231312111133131121333132323321   >>    C1111133313331323223313331333133313331323131211113313112133313232332   <<    C11111333133313232233133313331333133313231312111133131121333132323323   >>      C11111333133313232233133313331333133313231312111133131121333132323322   >>