C212212121212113313221323131323132313132322331323132233132313331333132331121121   >>    C21221212121211331322132313132313231313232233132313223313231333133313233112112   <<    C212212121212113313221323131323132313132322331323132233132313331333132331121123   >>      C212212121212113313221323131323132313132322331323132233132313331333132331121122   >>