C11111333133313232233133313331333133112111112113313331321123233131   >>    C1111133313331323223313331333133313311211111211331333132112323313   <<    C11111333133313232233133313331333133112111112113313331321123233133   >>      C11111333133313232233133313331333133112111112113313331321123233132   >>