C111123313331323113313331333133313331323112133313331333121111132332313222321   >>    C11112331333132311331333133313331333132311213331333133312111113233231322232   <<    C111123313331323113313331333133313331323112133313331333121111132332313222323   >>      C111123313331323113313331333133313331323112133313331333121111132332313222322   >>