Graph Walking Melodies  20200412 ; hood@panix.com
Please find a list of presumably all the possible 33,624 thirteen note "melody lines" (or "collection of notes"  if you will allow) produced by graph walking the set of the 12 intervals (major & minor: 2nds, 3rds, 6ths, 7ths; perfect 4ths & 5th; augmented 4th or diminished 5th, and the octave), within an  and inclusive of the  octave, starting from C (or solfege "Do"), constrained by:
1. not being allowed to visit a next note having an already "seen" interval. A note may be revisited  but through a different interval path. You can find these by:
1. downloading the pdf in the title above and searching below for a particular index number;
Upon pressing ENTER from the input area  the search, for instance, "CAGC"
will find all melody lines that match "Do La Sol Do" somewhere in the path of the melody line.
Using AND will subselect each AND group  so: "CAGC and GEC" will subselect "GEC" melodies from the melodies matching the prior "CAGC".
Use a space between terms to get multiple matches;
use "number + limit" to get a range of items between the most adjacent numbers.
Click on the found melody to hear a pretty "setPeriodicWave" wavepatterny AudioContext version of it. Many thanks to Dr. Evan Fein at Juilliard for coming up with a wider version of this exercise (he absents constraints #2 & 3), and Paul Rosen and Gregory Dyke for the notation rendering with abcjs. Of course, if you find errors, please do let me know. 
