qcrn// start// [[2,0]]// end// qcr1k// start// [[0,0.1212],[0,4.5347],[0,0.1212]]// end// qcr1c// start// [[2.5616,0.1904],[2.527,4.5347]]// end// start// [[-2.527,4.4828],[-2.527,0.1731]]// end// qcr2k// start// [[0,1],[2.1808,-0.1904]]// end// qcr2c// start// [[0.9866,0.9692],[1.402,-0.1731]]// end////