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