C213211331333131212111133133313231333132323132313231333132323323231   >>    C21321133133313121211113313331323133313232313231323133313232332323   <<    C213211331333131212111133133313231333132323132313231333132323323233   >>      C213211331333131212111133133313231333132323132313231333132323323232   >>