PRK29.14 :ריש דראובן תרתין מאוון אלפין‏ : the letter resh in "Reuben" stands for two hundred thousand
See the entire entry for ryš#2 n.m. resh, twenty-first letter

PRK29.14 :שין‏ :
See the entire entry for šīn n.m. shin, twenty-first letter