C31232233133313221211113313331333132313232233133313231323331333131312121   >>    C3123223313331322121111331333133313231323223313331323132333133313131212   <<    C31232233133313221211113313331333132313232233133313231323331333131312123   >>      C31232233133313221211113313331333132313232233133313231323331333131312122   >>