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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lān, lán, lǎn, làn

second tune

lán

blue 藍 lán

blue color 藍色 lán sè
blue 藍 lán	color 色 sè

basket 籃 lán

basketball 籃球 lán qiú
basket 籃 lán	ball 球 qiú

orchid 蘭 lán

orchid flower 蘭花 lán huā
orchid 蘭 lán	flower 花 huā

Chinese characters also pronunced lán

third tune

lǎn

lazy; laziness 懶 lǎn

lazy; laziness idle; idleness 懶惰 lǎn duò
lazy 懶 lǎn	laziness 惰 duò

view; see; look at 覽 lǎn

exhibit; exhibition 展覽 zhǎn lǎn
open; display 展 zhǎn	view 覽 lǎn

Chinese characters also pronunced lǎn

fourth tune

làn

rotten; decayed 爛 làn

decompose; rotten; putrid 腐爛 fǔ làn
rotten; spoiled 腐 fǔ	rotten; decayed 爛 làn

Chinese characters also pronunced làn