The following video demonstrates each syllable of the pinyin structure
and the exercise of pinyin/zhuyin with basic Chinese 4-tune pronunciation

Mandarin pinyin tunes
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gēn, gén, gěn, gèn

first tune

gēn

root 根 gēn

strike root; take root 生根 shēng gēn
grow; produce 生 shēng	root 根 gēn

follow heel 跟 gēn

follow 跟隨 gēn suí
follow 跟 gēn	follow 隨 suí

high-heeled shoes 高跟鞋 gāo gēn xié
high 高 gāo	heel 跟 gēn	shoes 鞋 xié

fourth tune

gèn

extend; stretch 亙 gèn