C1111133313331323223313331333133313331333232233133112111112111111113312121   >>    C111113331333132322331333133313331333133323223313311211111211111111331212   <<    C1111133313331323223313331333133313331333232233133112111112111111113312123   >>      C1111133313331323223313331333133313331333232233133112111112111111113312122   >>