The cobra is used for the "J" sound in words like jar and jewel, and names like John and Joanne.
There are two hieroglyphs for the letter "K". The top image is a basket. The bottom is a hillside.
Either hieroglyph can be used for the "K" sound in words like king and key, and names like Kevin and Kathryn.
Choose the one that creates the best design in your word.
The reclining lion is used for the "L" sound in words like law and land, and names like Louise and Lawrence.