saxseltai lujvo

x1=s1=s2=t2 is harmonious in its form in property x2=s3; x1 is symmetrical (mathematical sense) exhibiting symmetry x2.

See sarxe se tarmi, and compare jvamle which can also be translated as "symmetrical".

In notes:

jvamle
x1=m1=j2 is beautiful because it follows rule x2=j1=m3 to observer x3=m2; x1 is symmetrical (generalized sense to anything that is beautiful due to having a pattern).