rtokens: The town straddles a strategically important road linking government and rebel-held territory and has fallen succesively to both sides in a bloody tug-of-war which began last February .
pos: NNS VBD VBN NNS CC NNS CC JJ JJ NNS VBD DT NNS .
tokens: Shells had smashed roofs and windows and empty shell cases littered the streets .
ltokens: Tavildara , 200 km ( 120 miles ) east of the capital Dushanbe , was in ruins .