C1111133313331323223313331333133313113313223313331333131121133133313233222321   >>    C111113331333132322331333133313331311331322331333133313112113313331323322232   <<    C1111133313331323223313331333133313113313223313331333131121133133313233222323   >>      C1111133313331323223313331333133313113313223313331333131121133133313233222322   >>