Честотите са дефинирани като: много чести (≥1/ 10), чести (≥ 1/ 100, < 1/ 10) и нечести (≥ 1/ 1 000, < 1/ 100).
Frequencies are defined as: very common ≥ 1/ 10; common ≥ 1/ 100, < 1/ 10; and uncommon ≥ 1/ 1000, < 1/ 100.