• clak,
• calrk,
• claok,
• wlalk,
• clarm,
• claery,
• cliare,
• cleark,
• vlack,
• cualk,
• clearl,
• clery,
• cdark,
• clar,
• clarkes,
• clirk,
• claer,
• clcik,
• clars,
• carka

• clergy,
• Clarkson,
• click,
• Clarisa,
• clorox,
• clock,
• Claris,
• clerisy,
• lark,
• clerk,
• clerking,
• Clarke,
• cluck,
• clarkin,
• calk,
• cloak,
• Clarice,
• cleric,
• clank.

The plural form of the word "clark" is "clarks"

The singular form of the word "clark" is "clerk"