C111123313331323113313331333133313231323133312111113231323132313223323221   >>    C11112331333132311331333133313331323132313331211111323132313231322332322   <<    C111123313331323113313331333133313231323133312111113231323132313223323223   >>      C111123313331323113313331333133313231323133312111113231323132313223323222   >>