C11111333133313232233133313331333133313231312323132313233313112113122321   >>    C1111133313331323223313331333133313331323131232313231323331311211312232   <<    C11111333133313232233133313331333133313231312323132313233313112113122323   >>      C11111333133313232233133313331333133313231312323132313233313112113122322   >>