C1111133313331323223313331333133313331333131211111211331313322121   >>    C111113331333132322331333133313331333133313121111121133131332212   <<    C1111133313331323223313331333133313331333131211111211331313322123   >>      C1111133313331323223313331333133313331333131211111211331313322122   >>