C21221212121323223313131323132322331323223313222233132233112331   >>    C2122121212132322331313132313232233132322331322223313223311233   <<    C21221212121323223313131323132322331323223313222233132233112333   >>      C21221212121323223313131323132322331323223313222233132233112332   >>