C111123313121111121111331333133313331333131121133133313331323221321   >>    C11112331312111112111133133313331333133313112113313331333132322132   <<    C111123313121111121111331333133313331333131121133133313331323221323   >>      C111123313121111121111331333133313331333131121133133313331323221322   >>