C111123313331323113313331333133313331323133321133132313231321211   >>    C11112331333132311331333133313331333132313332113313231323132121   <<    C111123313331323113313331333133313331323133321133132313231321213   >>      C111123313331323113313331333133313331323133321133132313231321212   >>