A person sneaks ahead.#a/DET person/NOUN sneak/VERB ahead/ADV#0.0#8.63 A person creeps silently forward covertly.#a/DET person/NOUN creep/VERB silently/ADV forward/ADV covertly/ADV#0.0#8.63 A person moves covertly straight without a sound.#a/DET person/NOUN move/VERB covertly/ADV straight/ADV without/ADP a/DET sound/NOUN#0.0#8.63