C11111211113313112113313331333133313331333121111121111331322331323222321   >>    C1111121111331311211331333133313331333133312111112111133132233132322232   <<    C11111211113313112113313331333133313331333121111121111331322331323222323   >>      C11111211113313112113313331333133313331333121111121111331322331323222322   >>