CF2Cl2\mathrm{CF}_{2} \mathrm{Cl}_{2}CF2Cl2
CHCl3\mathrm{CHCl}_{3}CHCl3
CClF2CClF2\mathrm{CClF}_{2} \mathrm{CClF}_{2}CClF2CClF2
CClF2C\mathrm{CClF}_{2} \mathrm{C}CClF2C