There are a total of 27 4-letter words containing 'lk', and the number may vary in different dictionaries. You can specify the dictionary and order.

• alky ₁₁
• balk ₁₂
• bilk ₁₂
• bolk ₁₂
• bulk ₁₃
• calk ₁₂
• elks ₉
• folk ₁₂
• holk ₁₁
• hulk ₁₂
• ilka ₉
• ilks ₉
• milk ₁₂
• pulk ₁₃
• silk ₉
• sulk ₁₀
• talk ₉
• volk ₁₃
• walk ₁₂
• yelk ₁₁
• yolk ₁₁
• filk ₁₁
• alko ₈
• oulk ₈
• polk ₁₀
• welk ₁₁
• ylke ₁₁

There are 27 4-letter words containing lk in the well-known word game dictionary, 21 in the Scrabble US (US/Canada/Thailand - TWL/NWL) dictionary, and 25 in the Scrabble UK (International - SOWPODS/CSW) dictionary, and 21 in the Words with Friends (WWF) dictionary.