C1111233131211111211113313331333133313331122212111112111113232113313233131   >>    C111123313121111121111331333133313331333112221211111211111323211331323313   <<    C1111233131211111211113313331333133313331122212111112111113232113313233133   >>      C1111233131211111211113313331333133313331122212111112111113232113313233132   >>