C222123232321333131133133313331323133313231323211113131232322221   >>    C22212323232133313113313331333132313331323132321111313123232222   <<    C222123232321333131133133313331323133313231323211113131232322223   >>      C222123232321333131133133313331323133313231323211113131232322222   >>