C1111133313331323223313331333133313113313223313331333132212312121   >>    C111113331333132322331333133313331311331322331333133313221231212   <<    C1111133313331323223313331333133313113313223313331333132212312123   >>      C1111133313331323223313331333133313113313223313331333132212312122   >>