Adjoin-verse, ascension affinity
The four sides of the rectangle in the Fig. connect the corners by means of verses and parity. Across the top arrow we note the linking of 19 with 84 over 3725 adjoin (see Glossary) verse span, in perfect harmony with the similar span of 1925 (= 25 × 77) from 37 to 77 across the bottom arrow. Note, the reciprocal symmetry displayed between the two arrows: 19 from the top arrow joins with 25 (verses of 84) to form the span across the bottom arrow. Dually, 37 from the bottom arrow joins with 25 (of 77 verses) to form the span across the top arrow! The two vertical arrows on the right relate 25 to 77 and 84 via verses and the vertical arrow on the left pins down 37 as the 19th EV.
Both 37 and 77 (bottom arrow) also link by means of ascensions via 21 (interior curved arrows). From 21 to 77 (of cept 21) the ascension span of 3721 neatly correlates with the left curved arrow. The corresponding span on the left is 1425 (= 19 × 75). Note, from 14 (ord of 25) to 75 there are 37 EVs. Moreover, from 21 to 98 (verses of 19) there are 45 (of 37 verses) EVs and from 37 to 77 (bottom arrow) there are 25 EVs.
21 (verses of 92) combines with 98 (verses of 19) to form the adjoin verse span of 2198 across the 38 (ascension of 92) OPs from 19 to 84 (under the top arrow). Fittingly, the odd base verses up to 37 add up to 1984.