C212212121212113313221323131323131323132322331323132233132311123231   >>    C21221212121211331322132313132313132313232233132313223313231112323   <<    C212212121212113313221323131323131323132322331323132233132311123233   >>      C212212121212113313221323131323131323132322331323132233132311123232   >>