C333312111133133312111133133313331312111133223313331323223311212121   >>    C33331211113313331211113313331333131211113322331333132322331121212   <<    C333312111133133312111133133313331312111133223313331323223311212123   >>      C333312111133133312111133133313331312111133223313331323223311212122   >>