C1111121111331311211331333133313331333131232212111113331333132112323223213121   >>    C111112111133131121133133313331333133313123221211111333133313211232322321312   <<    C1111121111331311211331333133313331333131232212111113331333132112323223213123   >>      C1111121111331311211331333133313331333131232212111113331333132112323223213122   >>