suspecting that it was improvised on a day-to-day basis during production 
(ROOT (S (VP (VBG suspecting) (SBAR (IN that) (S (NP (PRP it)) (VP (VBD was) (VP (VBN improvised) (PP (IN on) (NP (DT a) (NML (NML (NN day)) (HYPH -) (PP (IN to) (HYPH -) (NP (NN day)))) (NN basis))) (PP (IN during) (NP (NN production))))))))))
(ROOT (S (VP (VBG ) (SBAR (IN ) (S (NP (PRP )) (VP (VBD ) (VP (VBN ) (PP (IN ) (NP (DT ) (NML (NML (NN )) (HYPH ) (PP (IN ) (HYPH ) (NP (NN )))) (NN ))) (PP (IN ) (NP (NN ))))))))))