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Note 2 - Summary of Significant Accounting Policies (Tables)
9 Months Ended
Sep. 30, 2023
Notes Tables  
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

Series A Convertible Preferred Shares

    3,269,998  

Conversion rate

    0.2  

Common shares after conversion

    654,000  

Series B Convertible Preferred Shares

    2,400,000  

Option shares

    211,875  

Warrant shares

    109,584