A ka gafɛ 3ɛmɛ sabana kɔnɔ saan 1861, Darwin sonna kɔ tɔw, ina fɔ William Charles Wells saan 1813, ni Patrick Matthew saan 1831, u tun ye o hakilina kelen kofɔ n'ga u ma a labaara u ma yira doniya gafɛw ɲɛnɛmanw kɔnɔ.