C1111133313331323223313331333133313113313223313331333131121133133313233112321   >>    C111113331333132322331333133313331311331322331333133313112113313331323311232   <<    C1111133313331323223313331333133313113313223313331333131121133133313233112323   >>      C1111133313331323223313331333133313113313223313331333131121133133313233112322   >>