C212212121212113313221323131323131323132322331323132233132313331333131123322131   >>    C21221212121211331322132313132313132313232233132313223313231333133313112332213   <<    C212212121212113313221323131323131323132322331323132233132313331333131123322133   >>      C212212121212113313221323131323131323132322331323132233132313331333131123322132   >>