C313212111133131211331333133313331333133311233133313311211233232321   >>    C31321211113313121133133313331333133313331123313331331121123323232   <<    C313212111133131211331333133313331333133311233133313311211233232323   >>      C313212111133131211331333133313331333133311233133313311211233232322   >>