(EDIT: reduced bounding box at the cost of population)

`x = 29, y = 116, rule = 123e5/3aeijn4-aciq6/3`

A6.A13.A6.A$A6.A13.A6.A2$2.B2.B30$2.A2.A16.2A2.2A$.2A2.2A14.2AB2.B2A$

2.A2.A16.2A2.2A16$A27.A$A27.A8$A$A2$28.A$28.A13$2.A2.A$.2A2.2A$2.A2.A

$22.2A2.2A$21.2AB2.B2A$22.2A2.2A27$2.B2.B2$A6.A$A6.A2$21.A6.A$21.A6.A

!

small p8 OMOS and p14 c/6 storage oscillator:

`x = 20, y = 6, rule = 123e5/3aeijn4-aciq6/3`

.A12.A$A2.A10.2A3.A$4.A9.A3.2A$4.A14.A$A2.A$.A!

p20 suicidal gun (which expresses a marked similarity to the p23) and a suicidal c/6 gun from combining 2: (see gens 2-15 to see the similarity)

`x = 67, y = 38, rule = 123e5/3aeijn4-aciq6/3`

A5.A$A5.A57.A$32.A12.A19.A$33.A12.A4$2.A.A56.A.A$.2AB2A9.A.A11.A.A10.

A.A15.A3.A$2.A.A9.2AB2A9.2AB2A8.2AB2A14.A3.A$15.A.A11.A.A10.A.A16.A.A

5$A$A32.A$32.A2$A5.A35.A.A16.A.A$A5.A34.2AB2A14.A3.A$32.A9.A.A15.A3.A

$33.A27.A.A4$2.A.A42.A$.A3.A9.A.A11.A.A14.A19.A$.A3.A8.A3.A9.A3.A32.A

$2.A.A9.A3.A9.A3.A$15.A.A11.A.A5$A$A32.A$32.A!

It seems like most p23n circuitry is interchangeable with p20n because the mechanisms are virtually identical (sadly the p20 suicidal c/6 gun doesn't work with p23)

4g synthesis of a p20:

`x = 13, y = 19, rule = 123e5/3aeijn4-aciq6/3`

A$2A$A6$6.A5.A$6.2A3.2A$6.A5.A6$A$2A$A!

It's a shame that there are no push reactions/ships slower than the replicator/diagonal ships because if there were we could probably make slower repships

If there were 90° reflectors we could probably make high-period oscillators of periods ≠ 15n