C222123232321333131133133313331323133313231333133312131323231221311   >>    C22212323232133313113313331333132313331323133313331213132323122131   <<    C222123232321333131133133313331323133313231333133312131323231221313   >>      C222123232321333131133133313331323133313231333133312131323231221312   >>