{HEAD ~ An integrated circuit complementary metal oxide silicon voltage controlled oscillator} includes {TAIL ~ a plurality} of variable delay elements, connected in a ring configuration, each variable delay element including a pair of parallel connected differential CMOS sections 
includes
{ HEAD ~ An integrated circuit complementary metal oxide silicon voltage controlled oscillator } includes { TAIL ~ a plurality } of variable delay elements , connected in a ring configuration , each variable delay element including a pair of parallel connected differential CMOS sections
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