In the most extreme case, a stock-out might cause a customer to switch retailers, costing the lifetime value of that customer and others who might defect due to negative word-of-mouth.
( ( In ( the ( ( most extreme ) case ) ) ) ( , ( ( a stock-out ) ( ( might ( ( ( ( cause ( a customer ) ) ( to ( switch retailers ) ) ) , ) ( ( costing ( the lifetime ) ) ( ( value ( of ( ( ( that customer ) and ) others ) ) ) ( who ( might ( defect ( due ( to ( negative word-of-mouth ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (DT the) (ADJP (RBS most) (JJ extreme)) (NN case))) (, ,) (NP (DT a) (NN stock-out)) (VP (MD might) (VP (VB cause) (NP (DT a) (NN customer)) (S (VP (TO to) (VP (VB switch) (NP (NNS retailers))))) (, ,) (S (VP (VBG costing) (NP (DT the) (NN lifetime)) (NP (NP (NN value)) (PP (IN of) (NP (NP (DT that) (NN customer)) (CC and) (NP (NNS others)))) (SBAR (WHNP (WP who)) (S (VP (MD might) (VP (VB defect) (ADJP (JJ due) (PP (TO to) (NP (JJ negative) (NN word-of-mouth))))))))))))) (. .)))
A customer must stick with the same retailer once they choose one.
( ( A customer ) ( ( must ( ( stick ( with ( the ( same retailer ) ) ) ) ( once ( they ( choose one ) ) ) ) ) . ) )
(ROOT (S (NP (DT A) (NN customer)) (VP (MD must) (VP (VB stick) (PP (IN with) (NP (DT the) (JJ same) (NN retailer))) (SBAR (IN once) (S (NP (PRP they)) (VP (VBP choose) (NP (CD one))))))) (. .)))