NOT KNOWN FACTUAL STATEMENTS ABOUT 12345ASDF

We hunt for the placement p of every character of the input inside a string S wherever the keyboard rows are interleaved: the main four people are '1QAZ' (very first column from the keyboard), the subsequent 4 figures are '2WSX' (second column on the keyboard) etc. Unused positions are padded with underscores and the last types are merely discarded