Letters that make single-shelled
s, d, e, g, l, n, h, i are letters that make 'single-shelled'
Words within single-shelled
Hell, el, ell, LED, he, si, He, ng, SI, ED, EL, single, shelled, in, hell, sin, shell, IN, Sin, Hel, LE, In, Si, sing are words within 'single-shelled'