this was pretty much the way i memorised the 2s, except i did the mnemonics by hand. (i've written a lot of little apps like this but from the inverse point of

this was pretty much the way i memorised the 2s, except i did the mnemonics by hand. (i've written a lot of little apps like this but from the inverse point of view - i type in a hand-generated mnemonic and it tests it for correctness, and tells me what letters are missing or incorrectly there)