41. Some wear the latest running shoes and singlets carrying the names of athletic companies. 42. The singlet deuteron is a virtual state, with a negative binding energy of. 43. Singlet oxygen can theoretically only interact with proximal molecules and structures within this radius.44. The singlet ground state has a rectangular structure. 45. Mrs Chamberlain gave evidence that she always ensured that singlets were not inside out. 46. Purple and checkered jackets are worn as well, usually accompanied by another singlet . 47. Each house has its own running vest ( singlet ) in the house colours. 48. Phosphite ozonides will decompose to give singlet oxygen: 49. That is, an eight-dimensional representation, the octet of the singlet . 50. A high-cut or FILA-cut singlet is required for this level.