C111123313331323113313331331121111331323132322331333132313231121   >>    C11112331333132311331333133112111133132313232233133313231323112   <<    C111123313331323113313331331121111331323132322331333132313231123   >>      C111123313331323113313331331121111331323132322331333132313231122   >>