CREATE TABLE table_28993 ("Proto-Slavic" TEXT, "Russian" TEXT, "Ukrainian" TEXT, "Belarusian" TEXT, "Polish" TEXT, "Czech" TEXT, "Slovak" TEXT, "Slovene" TEXT, "Serbo-Croatian" TEXT, "Bulgarian" TEXT, "Macedonian" TEXT)

When (v kha) is the belarusian how many slovaks are there?
SELECT COUNT("Slovak") FROM table_28993 WHERE "Belarusian" = 'вуха (vúkha)'
SELECT COUNT("Slovak") FROM "table_28993" WHERE "Belarusian" = 'вуха (vúkha)'