submarine@@1	submarine	underwater craft	16
submarine@@1	submarine	u-boat	14
submarine@@1	submarine	sub	13
submarine@@1	submarine	submersible	10
submarine@@1	submarine	underwater vessel	9
submarine@@1	submarine	craft	2
submarine@@1	submarine	submersible warship	2
submarine@@1	submarine	subsurface ship	2
submarine@@1	submarine	underwater boat	2
submarine@@1	submarine	vessel	2