C31232233133313221211113313331333131211113313223313232233133313231323112121   >>    C3123223313331322121111331333133313121111331322331323223313331323132311212   <<    C31232233133313221211113313331333131211113313223313232233133313231323112123   >>      C31232233133313221211113313331333131211113313223313232233133313231323112122   >>