How to Get Youtube Thumbnails (Table with Dimensions)

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Youtube thumbnails of the following widths and heights are guaranteed to exist.

Width | Height | URL
------|--------|----
120   | 90     | https://i.ytimg.com/vi/<VIDEO ID>/1.jpg
120   | 90     | https://i.ytimg.com/vi/<VIDEO ID>/2.jpg
120   | 90     | https://i.ytimg.com/vi/<VIDEO ID>/3.jpg
120   | 90     | https://i.ytimg.com/vi/<VIDEO ID>/default.jpg
320   | 180    | https://i.ytimg.com/vi/<VIDEO ID>/mq1.jpg
320   | 180    | https://i.ytimg.com/vi/<VIDEO ID>/mq2.jpg
320   | 180    | https://i.ytimg.com/vi/<VIDEO ID>/mq3.jpg
320   | 180    | https://i.ytimg.com/vi/<VIDEO ID>/mqdefault.jpg
480   | 360    | https://i.ytimg.com/vi/<VIDEO ID>/0.jpg
480   | 360    | https://i.ytimg.com/vi/<VIDEO ID>/hq1.jpg
480   | 360    | https://i.ytimg.com/vi/<VIDEO ID>/hq2.jpg
480   | 360    | https://i.ytimg.com/vi/<VIDEO ID>/hq3.jpg
480   | 360    | https://i.ytimg.com/vi/<VIDEO ID>/hqdefault.jpg

SOURCE: Stack Overflow; special thanks to Ali Han, the author.