The pages of Wagaya no Oinarisama, ch 19 by Shirayuki Scans, are out of order.
http://vatoto.com/read/_/192823/wagaya-no-oinarisama_v4_ch19_by_shirayuki-scans
Pages 17 - 27 should be moved earlier to right after p1.
AFAICT, the correct page order is: p1, p17-27, p2-16, p28-29.