In this embodiment, a pair consisting of a fastening member 9 a and a fastening member 9 b is a buckle consisting of a male part 9 a and a female part 9 b to achieve fastening by {TAIL ~ the resilient engagement} between {HEAD ~ the engagement pieces} of the male and female parts 
In this embodiment , a pair consisting of a fastening member 9 a and a fastening member 9 b is a buckle consisting of a male part 9 a and a female part 9 b to achieve fastening by { TAIL ~ the resilient engagement } between { HEAD ~ the engagement pieces } of the male and female parts
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