 
<translate> Erratic pụtara na-adịghị edozi ahụ na nke na-adịghị edozi ahụ. Ọ bụ ihe a na-adịghị ahụkebe n'ihi na n'ozuzu ya, nsonaazụ ya na-adịkwa n'usoro. N'ihi ya, azịza ikpeazụ ahụ bụ ihe a na-adịghị ahụkebe. <eng> Erratic means uneven and irregular in pattern. It was uncommon as generally the results were even and regular.
So, the final answer is uncommon. 