C222123232321333131133133313331323133313231333131331131331331221   >>    C22212323232133313113313331333132313331323133313133113133133122   <<    C222123232321333131133133313331323133313231333131331131331331223   >>      C222123232321333131133133313331323133313231333131331131331331222   >>