C111112111133131121133133313331333132311211312111133132233132212321   >>    C11111211113313112113313331333133313231121131211113313223313221232   <<    C111112111133131121133133313331333132311211312111133132233132212323   >>      C111112111133131121133133313331333132311211312111133132233132212322   >>