⠀ ⠀ CH3⠀ ⠀CH3 ⠀ ⠀ ⠀|⠀ ⠀ ⠀ | CH3-C-CH2-CH-CH3⠀ ⠀ ⠀|⠀ ⠀ CH3____________________⠀ ⠀ Br⠀ Br⠀Br⠀ ⠀ ⠀I⠀ ⠀|⠀ | CH3-CH-CH-C-CH2-CH3⠀ ⠀ ⠀ ⠀ ⠀ ⠀ | ⠀ ⠀ ⠀ ⠀ ⠀ ⠀Br____________________⠀ ⠀ CH3 CH3⠀ ⠀ CH3 ⠀ ⠀ ⠀|⠀ ⠀|⠀ ⠀ ⠀ ⠀|CH3-CH-CH-CH2-C-CH3⠀ ⠀ ⠀ ⠀ ⠀ ⠀ ⠀ ⠀ ⠀|⠀ ⠀ ⠀ ⠀ ⠀ ⠀ ⠀ ⠀ CH3____________________⠀ ⠀ CH3⠀Cl⠀ ⠀ ⠀|⠀ ⠀|CH3-CH-CH-CH2-CH2-CH2-CH3____________________⠀ ⠀ CH3⠀C2H5⠀ ⠀ ⠀|⠀ ⠀|CH3-CH-CH-CH2-CH3____________________