Sequence of 3 Metamorphoses

There are 2 possibilities here - 014 and 041
     (all other combinations being the result of starting elsewhere)

The 401 sequence
If we start on the TONIC C⁶, which changes (with 4) to Am⁷,
     the next would be Dm⁶ (which remains the same with 0),
          then back to Am⁷ which changes (with 1) to Am^-6,
then Em⁷, which changes (with 4) to G⁶,
     then Dm⁷ (which remains the same with 0),
          then back to G⁶ which changes (with 1) to G⁷,
     producing a 6-chord extended Swing from C⁶ to Em⁷
          composed of ((C⁶Am⁷ - Dm⁶ - Am^-6 / Em⁷G⁶ - Dm⁷ - G⁷))
               which can be repeated indefinitely,
     followed by C, chord of rest.

     To see the Voice-leading

The 041 sequence
If we start on the TONIC C⁶, (which remains the same with 0),
     the next would be G⁷ which changes (with 4) to Bm^-6-5,
          then F⁺⁷ which changes (with 1) to F⁶,
then C⁺⁷, (which remains the same with 0),
     then F⁶ which changes (with 4) to Dm⁷,
          then G⁶ which changes (with 1) to G⁷,
     producing a 6-chord "double" Swing around C,
          composed of ((C⁶ - G⁷Bm^-6-5 - F⁶ / C⁺⁷ - F⁶Dm⁷ - G⁷))
               which can be repeated indefinitely,
     followed by C, chord of rest.

     To see the Voice-leading