C111123313331323113313331331121111331323132322331333132313233313232211   >>    C11112331333132311331333133112111133132313232233133313231323331323221   <<    C111123313331323113313331331121111331323132322331333132313233313232213   >>      C111123313331323113313331331121111331323132322331333132313233313232212   >>