C31232233133313221211113313331333133313331212111113112113312121   >>    C3123223313331322121111331333133313331333121211111311211331212   <<    C31232233133313221211113313331333133313331212111113112113312123   >>      C31232233133313221211113313331333133313331212111113112113312122   >>