C212212121212113313221323131323131323132322331323132233132313331333131122121   >>    C21221212121211331322132313132313132313232233132313223313231333133313112212   <<    C212212121212113313221323131323131323132322331323132233132313331333131122123   >>      C212212121212113313221323131323131323132322331323132233132313331333131122122   >>