Example sentences of "may have [been] [verb] [det] " in BNC.

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1 Although its size is not yet known , suggestions have been made that it was larger than a normal auxiliary fort and may have accommodated either a vexillation , possibly of Legio IX , whose tile-works may have been situated some 8 km ( 5 miles ) south of Carlisle at Scalesceugh , ( though the stamped tiles from there may belong to a slightly later period ) , or the Ala Petriana before its transfer to Stanwix over the river .
2 Implicitly , many decisions may have been made that disadvantage older people .
3 Barbiturates are the second hierarchical category , and individuals in this group may have been using any of the drugs in the four categories below , but not opioids .
4 She may have been killed any time in the last two days . ’
5 Paradoxically , however , although over the years you may have been contributing many thousands of pounds to the Inland Revenue , in practice you may have had very little direct contact with the tax system .
6 An offending tree may have been planted many years ago by a previous owner .
7 Of course , gardens have long been maintained in conjunction with historic houses ; what is new is the desire to rescue and restore gardens that may have been abandoned many years ago , as attractions in their own right .
8 These men were in touch with Edward Balliol , the heir of the Scottish king dispossessed by Edward I , and they may have been planning some move to recover their position in either England or Scotland .
9 Although there may have been surviving some notion of the tradition of ordered government from the ancient world , in actuality Rome had no strong , centralized government since classical times .
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