https://www.dropbox.com/s/7tb6iokqc6mhdbb/reopt1pdf.pdf?dl=0 https://www.dropbox.com/s/gzoeluf0hol5ri7/reopt2pdf.pdf?dl=0 https://www.dropbox.com/s/jetwy2hbmtp7m44/reopt3pdf.pdf?dl=0