I had, had put in several weeks that were between 60 and 90 hours a week.
( ( I had ) ( , ( ( ( had ( put ( in ( ( several weeks ) ( that ( were ( ( ( ( between 60 ) and ) 90 ) hours ) ) ) ) ) ) ) ( a week ) ) . ) ) )
(ROOT (SINV (S (NP (PRP I)) (VP (VBD had))) (, ,) (VP (VBD had) (VP (VBN put) (PP (IN in) (NP (NP (JJ several) (NNS weeks)) (SBAR (WHNP (WDT that)) (S (VP (VBD were) (NP (QP (IN between) (CD 60) (CC and) (CD 90)) (NNS hours))))))))) (NP (DT a) (NN week)) (. .)))
I always worked less than 20 hours a week. 
( I ( always ( ( ( worked ( ( less ( than 20 ) ) hours ) ) ( a week ) ) . ) ) )
(ROOT (S (NP (PRP I)) (ADVP (RB always)) (VP (VBD worked) (NP (QP (JJR less) (IN than) (CD 20)) (NNS hours)) (NP (DT a) (NN week))) (. .)))