Тази честота е определена както следва: много чести (≥1/ 10), чести (≥1/ 100 до < 1/ 10) и нечести (≥1/ 1 000 до < 1/ 100).
The frequencies are defined as follows: very common (≥ 1/ 10), common (≥ 1/ 100 to < 1/ 10), uncommon (≥ 1/ 1,000 to < 1/ 100).