Complex sentence: Sy frequently used pencil artists on the strip, working primarily as an inker (although he often drew entire stories when time permit it), like George Olesen, Joe Giella, Bob Forgione, Andre LeBlanc, and Carmine Infantino.
Split into simpler sentences: Sy frequently used pencil artists on the strip, working primarily as an inker (although he often drew entire stories when time permited). Pencilers included George Olesen, Joe Giella, Bob Forgione, Andre LeBlanc, and Carmine Infantino.