C313212111133131211331333133313331333133313231333133313331333133311221123233221   >>    C31321211113313121133133313331333133313331323133313331333133313331122112323322   <<    C313212111133131211331333133313331333133313231333133313331333133311221123233223   >>      C313212111133131211331333133313331333133313231333133313331333133311221123233222   >>