31478587two-centered archesPT2026-03-30 21:08:52UF31478588two-centred archNDUF31478589two-centred pointed archesNDUF31478590two-centred segmental archesNDUF31478591arches, two-centeredNDUF31478592two-centered archNDBT31472384arches by form: number of centersPTRT31478554pointed segmental archesPT