Some organizations that don't require the center to snap the ball to the quarterback only use 2 linemen.
sˌʌm ˌɔːɹɡɐnᵻzˈeɪʃənz ðæt dˈoʊnt ɹᵻkwˈaɪɚ ðə sˈɛntɚ tə snˈæp ðə bˈɔːl tə ðə kwˈɔːɹɾɚbˌæk ˈoʊnli jˈuːs tˈuː lˈaɪnmɛn.