C31232233133313221211113313331333132313232233133313232112313231   >>    C3123223313331322121111331333133313231323223313331323211231323   <<    C31232233133313221211113313331333132313232233133313232112313233   >>      C31232233133313221211113313331333132313232233133313232112313232   >>