C21221212121323223313131323132322331323223313331312121121113221   >>    C2122121212132322331313132313232233132322331333131212112111322   <<    C21221212121323223313131323132322331323223313331312121121113223   >>      C21221212121323223313131323132322331323223313331312121121113222   >>