C21221212121323223313131323132322331323223313222233132323323123111   >>    C2122121212132322331313132313232233132322331322223313232332312311   <<    C21221212121323223313131323132322331323223313222233132323323123113   >>      C21221212121323223313131323132322331323223313222233132323323123112   >>