FKOQR, 1-3M-3-1M June 10, 2015Tessellation Nation1-3M-3-1M, 4-shape tessellation, FKOQRRaymond K. Houston Share this:EmailPrintFacebookMorePinterestTwitter Related posts: FKOQR, 1-2-2M-1M FKOQR, 1-3-3M-1M FKOQR, 1-4-4M-1M FKOQR, 1-1M-3-3M FKOQR, 1-2M-1M-2