C212212121212113313221323131323131323132322331323132233132311311321   >>    C21221212121211331322132313132313132313232233132313223313231131132   <<    C212212121212113313221323131323131323132322331323132233132311311323   >>      C212212121212113313221323131323131323132322331323132233132311311322   >>