Ngā āhuatanga o ngā taputapu kutukutu:
1. Ka whakarato i ngā raiō whakaiti nui mō tētahi tawhiti pokapū kua hoatu
2. He maeneene, he maeneene hoki te mahi honohono
3. Kāore e taea e te wira noke te taraiwa i te ao mena kāore e tutuki ētahi tikanga
Te kaupapa mahi a te taputapu kutukutu:
He poutū ngā pou e rua o te taputapu noke me te puku noke tetahi ki tetahi; ka taea te kī ko te noke he porowhita me te niho kotahi (upoko kotahi) he maha rānei ngā niho (upoko maha) e takai ana i te porowhita o te rango, ā, he rite te taputapu noke ki te taputapu whakarara, engari ko ōna niho e karapoti ana i te noke. I te wā e honoa ana, ka hurihia te wira noke mā te hurihanga kotahi o te noke mā te niho kotahi (noke pito kotahi) he maha rānei ngā niho (noke pito maha). Nō reira, ko te ōwehenga tere i o te tuku taputapu noke = te maha o ngā upoko o te noke Z1/te maha o ngā niho o te wira noke Z2.