      const bestPos = possiblePosArr[0];

                        if (frontCanvasForDebug) {
                            frontContextForDebug.fillStyle = `rgba(0,0,0,0.5)`;
                            frontContextForDebug.fillRect(maskCenterL, maskCenterT, maskCenterR - maskCenterL, maskCenterB - maskCenterT);
                        }

                        if (backCanvasForDebug) {
                            backContextForDebug.fillStyle = `rgb(255, 128, 83)`;
                            backContextFor