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ls */

or

ls -d */*

This would list the contents of all the non-hidden subdirectories in the current directory. Since you only seem to have subdirectories with numeric names, this will show the contents of these.

The shell globbing pattern * would expand to all non-hidden names in the current directory. Adding a / at the end of the pattern forces the pattern to expand to only directories (since non-directories can't have / in their names).