So far, however, the number of mail pieces lost to alternative bill-paying methods is too small to have any material impact on First-Class volume.
( ( So far ) ( , ( however ( , ( ( ( the number ) ( of ( ( mail pieces ) ( lost ( to ( alternative ( bill-paying methods ) ) ) ) ) ) ) ( ( ( is ( too small ) ) ( to ( have ( ( any ( material impact ) ) ( on ( First-Class volume ) ) ) ) ) ) . ) ) ) ) ) )
(ROOT (S (ADVP (IN So) (RB far)) (, ,) (ADVP (RB however)) (, ,) (NP (NP (DT the) (NN number)) (PP (IN of) (NP (NP (NN mail) (NNS pieces)) (VP (VBN lost) (PP (TO to) (NP (JJ alternative) (JJ bill-paying) (NNS methods))))))) (VP (VBZ is) (ADJP (RB too) (JJ small)) (S (VP (TO to) (VP (VB have) (NP (NP (DT any) (NN material) (NN impact)) (PP (IN on) (NP (NNP First-Class) (NN volume)))))))) (. .)))
The amount of mail lost is too smal  to leave an impact on volume 
( ( ( The amount ) ( of ( mail lost ) ) ) ( ( is ( too smal ) ) ( to ( ( leave ( an impact ) ) ( on volume ) ) ) ) )
(ROOT (S (NP (NP (DT The) (NN amount)) (PP (IN of) (NP (NP (NN mail)) (VP (VBN lost))))) (VP (VBZ is) (ADJP (RB too) (JJ smal)) (S (VP (TO to) (VP (VB leave) (NP (DT an) (NN impact)) (PP (IN on) (NP (NN volume)))))))))