C3121113331313231323132333131313231323131323223313233313233313233313231113221   >>    C312111333131323132313233313131323132313132322331323331323331323331323111322   <<    C3121113331313231323132333131313231323131323223313233313233313233313231113223   >>      C3121113331313231323132333131313231323131323223313233313233313233313231113222   >>