C31232233133313221211113313331323133313233313233313231313112111   >>    C3123223313331322121111331333132313331323331323331323131311211   <<    C31232233133313221211113313331323133313233313233313231313112113   >>      C31232233133313221211113313331323133313233313233313231313112112   >>