賀 is a Japanese kanji written with 12 strokes, listed here under the keyword “congratulations”. It is built from 貝 (shellfish) and 加 (add). In Remembering the Kanji by James W. Heisig it is frame 933.
On KumiJi Glyph Explorer, open the parts search and type “shellfish” + “add”. 賀 is among the results, together with every other character containing the same shapes.
Open 賀 in the interactive kanji search
to expand every part down to its smallest pieces, add your own names and mnemonic stories,
or search for other characters by their parts.