on pain ofon pain of imprisonmenton siteon site inquiry investigationone stage adjudicationonerous contractonusonus of proofonus probandiopenopen contractopen courtopen end contractopening statementopening stockoperating profitoperationoperation of law byoperativeoperative mistakeoperative partoperative words clauseopinio jurisopinionopposing partyoppositionoptionoption agreementoption clauseoption contractoption of inspectionoptionaloptional contractoral contractoral evidenceordainorderorder nisiorder of to theordinanceordinaryordinary creditorordinary damagesordinary partnerordinary partnershipordre publicoriginorigin certificate oforiginaloriginal bill