{TAIL ~ A liquid crystal composition}, comprising as a first component thereof {HEAD ~ at least one compound} selected from the compounds 1, and as a second component thereof at least one compound selected from the group consisting of the compounds represented by formula or : 
{ TAIL ~ A liquid crystal composition } , comprising as a first component thereof { HEAD ~ at least one compound } selected from the compounds 1 , and as a second component thereof at least one compound selected from the group consisting of the compounds represented by formula or :
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH