|2+4|3-3|6-1|13-2|15+1|17-1|20-2|22+1|23+3|25-1| turn 90° clockwise
|6+1|7-3|8-1|9+2|10-3|12+3|13-2|14-1|16+3|18-2|20-4|21+3| turn 90° clockwise
|4+3|6-2|8+4|9-1|10-2|11+2|13-2|16-3|18+2|19-5|20-1|21-2| turn 90° clockwise
|5+3|6-4|8-2|10+3|12-1|13-2|14+3|16-3|17+2|18-1|19-3|20+1| turn 90° clockwise
|2-4|3+3|5-2|7-5|8+2|10-3|15+1|16-2|18+4|22+2|23-3|25+1| end.