C1111133313331323223313331333133313331333131211111211331323232321   >>    C111113331333132322331333133313331333133313121111121133132323232   <<    C1111133313331323223313331333133313331333131211111211331323232323   >>      C1111133313331323223313331333133313331333131211111211331323232322   >>