Atụmatụ 1.Our slip mpịakọta igwe ọ bụghị nanị na-esi anwụ anwụ ma nwekwara ike cone ihe 2. Igwe mpịakọta anyị na-amịpụta nwere ike ịtụgharị nchara nchara gburugburu nke nkọwa ya bụ φ 6, φ 8, φ 10 na na. 3. Enwere ike ịdọrọ elu axis nke igwe mpịakọta mpịakọta anyị ngwa ngwa iji wepụta mpempe ọrụ arụpụtara.
