([lemma=the] [tag=":"] [□])? □ □
([lemma=the] [tag=":"] [□=□])? □ □
([lemma=the] [tag=":"] [!□])? □ □
For example , a caller who pressed a valid option would hear that they had made an invalid entry , and perhaps also be disconnected . Consequently , it is not likely that there would be , at any particular time , a significant number of non-employees holding valid options as a result of transfer from a decedent . These custom dialogs ensure that users make appropriate selections that match their needs and choose only from valid options , making it easy for people to complete complex transactions unassisted . Check into it anyway , as it is a valid option . TFF may be a valid option for the concentration of IBs along with contaminating cellular debris , while removing the cellular and media proteins . The professional makes the decision what to study , when and in what kind of program - formal or informal , but for an engineer , " if " is not a valid option . The problem , perhaps not of their making , is that even the interest groups may not give the public all the valid options on a policy question . The following list presents valid options for engine / host-options .