C31232233133313221211113313331333133313331212111113331333233313231231   >>    C3123223313331322121111331333133313331333121211111333133323331323123   <<    C31232233133313221211113313331333133313331212111113331333233313231233   >>      C31232233133313221211113313331333133313331212111113331333233313231232   >>