C11111211113313112113313331333133313331312111133132211233112321   >>    C1111121111331311211331333133313331333131211113313221123311232   <<    C11111211113313112113313331333133313331312111133132211233112323   >>      C11111211113313112113313331333133313331312111133132211233112322   >>