CROSSWORD CLUES

ACROSS 6 By chance (12) 8 Sour condiment (7) 9 Urge on (5) 10 Back of the neck (4) 12 Tall tropical plant (6) 14 Herb type (5) 15 Assault (6) 16 Unit of length (4) 19 Electronic message (1-4) 21 Avian influenza (4,3) 22 Without assistance (6-6) DOWN 1 Strong alcoholic drink (8) 2 Proverb (5) 3 Sleep noisily (5) 4 Main city (7) 5 Smack (4) 6 Benefits (10) 7 Dog type (10) 11 Close friend (3) 12 Large (3) 13 Real or genuine (4,4) 14 Study of living organisms (7) 17 Religious building (5) 18 Opening shot in snooker (5) 20 Among (4)