C31232233133313221211113313331333132313331323331333133311232221   >>    C3123223313331322121111331333133313231333132333133313331123222   <<    C31232233133313221211113313331333132313331323331333133311232223   >>      C31232233133313221211113313331333132313331323331333133311232222   >>