blackhead disease

space

U+0020

latin small letter a

U+0061

latin small letter b

U+0062

latin small letter c

U+0063

latin small letter d

U+0064

latin small letter e

U+0065

latin small letter h

U+0068

latin small letter i

U+0069

latin small letter k

U+006B

latin small letter l

U+006C

latin small letter s

U+0073