C1111133313331323223313331333133313311211111211331333132112323222333131221   >>    C111113331333132322331333133313331331121111121133133313211232322233313122   <<    C1111133313331323223313331333133313311211111211331333132112323222333131223   >>      C1111133313331323223313331333133313311211111211331333132112323222333131222   >>