[lemma=few] [lemma=source] [tag=IN] [lemma=surface | □]
[lemma=few] [lemma=source] [tag=IN] [lemma=surface | □=□]
[lemma=few] [lemma=source] [tag=IN] [lemma=surface | □ | □]
There were few sources of surface water on the Kansas prairie other than streams . Getting lost , damaged or forgotten equipment , the weather , inhospitable terrain , enemy patrols and physical limitations are just a few sources of frustration and anger .