C3121113331313231323132333131313231323131323223313233313233313232111231111   >>    C312111333131323132313233313131323132313132322331323331323331323211123111   <<    C3121113331313231323132333131313231323131323223313233313233313232111231113   >>      C3121113331313231323132333131313231323131323223313233313233313232111231112   >>