( 1) 13 = 1+2+3+7 ( 2) 13 = 1+2+4+6 ( 3) 26 = 1+2+10+13 ( 4) 26 = 1+2+11+12 ( 5) 13 = 1+3+4+5 ( 6) 26 = 1+3+9+13 ( 7) 26 = 1+3+10+12 ( 8) 26 = 1+4+8+13 ( 9) 26 = 1+4+9+12 (10) 26 = 1+4+10+11 (11) 26 = 1+5+7+13 (12) 26 = 1+5+8+12 (13) 26 = 1+5+9+11 (14) 26 = 1+6+7+12 (15) 26 = 1+6+8+11 (16) 26 = 1+6+9+10 (17) 26 = 1+7+8+10 (18) 26 = 2+3+8+13 (19) 26 = 2+3+9+12 (20) 26 = 2+3+10+11 (21) 26 = 2+4+7+13 (22) 26 = 2+4+8+12 (23) 26 = 2+4+9+11 (24) 26 = 2+5+6+13 (25) 26 = 2+5+7+12 (26) 26 = 2+5+8+11 (27) 26 = 2+5+9+10 (28) 26 = 2+6+7+11 (29) 26 = 2+6+8+10 (30) 26 = 2+7+8+9 (31) 26 = 3+4+6+13 (32) 26 = 3+4+7+12 (33) 26 = 3+4+8+11 (34) 26 = 3+4+9+10 (35) 26 = 3+5+6+12 (36) 26 = 3+5+7+11 (37) 26 = 3+5+8+10 (38) 26 = 3+6+7+10 (39) 26 = 3+6+8+9 (40) 39 = 3+11+12+13 (41) 26 = 4+5+6+11 (42) 26 = 4+5+7+10 (43) 26 = 4+5+8+9 (44) 26 = 4+6+7+9 (45) 39 = 4+10+12+13 (46) 26 = 5+6+7+8 (47) 39 = 5+9+12+13 (48) 39 = 5+10+11+13 (49) 39 = 6+8+12+13 (50) 39 = 6+9+11+13 (51) 39 = 6+10+11+12 (52) 39 = 7+8+11+13 (53) 39 = 7+9+10+13 (54) 39 = 7+9+11+12 (55) 39 = 8+9+10+12