C212212121212113313221323131323131323132322331323132233132313311232211331   >>    C21221212121211331322132313132313132313232233132313223313231331123221133   <<    C212212121212113313221323131323131323132322331323132233132313311232211333   >>      C212212121212113313221323131323131323132322331323132233132313311232211332   >>