var useregion = [['cell1-4','cell1-5'],['cell2-3','cell2-4','cell2-5','cell2-6'],['cell3-2','cell3-3','cell3-4'],['cell3-6','cell3-7'],['cell4-1','cell4-2','cell4-3'],['cell4-5','cell4-6','cell4-7'],['cell5-1','cell5-2'],['cell5-4','cell5-5','cell5-6'],['cell6-2','cell6-3','cell6-4','cell6-5'],['cell7-3','cell7-4'],['cell4-1','cell5-1'],['cell3-2','cell4-2','cell5-2','cell6-2'],['cell2-3','cell3-3','cell4-3'],['cell6-3','cell7-3'],['cell1-4','cell2-4','cell3-4'],['cell5-4','cell6-4','cell7-4'],['cell1-5','cell2-5'],['cell4-5','cell5-5','cell6-5'],['cell2-6','cell3-6','cell4-6','cell5-6'],['cell3-7','cell4-7']];