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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to link more related multi-character Chinese words!

wō, wó, wǒ, wò

first tune

wō

nest; den; lair; hideout 窩 wō

Chinese characters also pronunced wō

third tune

wǒ

I, me 我 wǒ

fourth tune

wò

grip; grasp 握 wò

shake hands 握手 wò shǒu
grasp 握 wò	hand 手 shǒu

lie down; sleeping 臥 wò

crouching tiger and hidden dragon full of all kinds of hidden talents (Chinese idiom) 臥虎藏龍 wò hǔ cáng lóng
lie down 臥 wò	tiger 虎 hǔ	hide 藏 cáng	dragon 龍 lóng

Chinese characters also pronunced wò