C111123313331323113313331323133313231323132322331323133313223311211   >>    C11112331333132311331333132313331323132313232233132313331322331121   <<    C111123313331323113313331323133313231323132322331323133313223311213   >>      C111123313331323113313331323133313231323132322331323133313223311212   >>