C11111211113313112113313331333133313331333131211113313232233132311111   >>    C1111121111331311211331333133313331333133313121111331323223313231111   <<    C11111211113313112113313331333133313331333131211113313232233132311113   >>      C11111211113313112113313331333133313331333131211113313232233132311112   >>