C31232233133313221211113313331333132313232233133313233313232213131   >>    C3123223313331322121111331333133313231323223313331323331323221313   <<    C31232233133313221211113313331333132313232233133313233313232213133   >>      C31232233133313221211113313331333132313232233133313233313232213132   >>