C222123232321333131133133313331323133313231323133311322122221111   >>    C22212323232133313113313331333132313331323132313331132212222111   <<    C222123232321333131133133313331323133313231323133311322122221113   >>      C222123232321333131133133313331323133313231323133311322122221112   >>