HYPOBARISM

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abo abs aby ahi ahs aim air ais ami amp apo arb arm ars ash asp ays bah bam bap bar bas bay bio bis boa bop bos boy bra bro bys ham hao hap has hay him hip his hob hop hos hoy hyp imp ism map mar mas may mho mib mir mis moa mob mop mor mos oar oba obi ohm ohs oms ops ora orb ors pah pam par pas pay phi pia pis poh poi pom pro pry psi pya rah rai ram rap ras ray rho ria rib rim rip rob rom rya sab sap say sha shy sib sim sip sir sob som sop soy spa spy sri yah yam yap yar yip yob yom

abos abri abys ahis ahoy aims airs airy ambo amir amis amps apos arbs arms army ashy bams baps barm bars bash bays bias bima bios biro boar boas bops bora bosh boys bras bray brim brio bris bros hair hams haps harm harp hasp hays hims hips hoar hobs homy hops hora hoya hoys hypo hyps iamb imps isba mair maps mars mash mayo mays mhos mibs mips mirs miry miso moas mobs mops mopy mora mors mosh oars obas obia obis ohia ohms opah orbs orby osar pair pams pars pash pays phis pias pima pish piso pois poms posh posy pram prao pray prim proa prom pros pyas pyro rais rami ramp rams raps rash rasp rays rhos rias ribs rims rimy rips roam robs romp roms ropy rosy ryas samp sari sham shay shim ship shmo shop shri sima simp soap soar soba soma soph sora sorb sori soya spam spar spay spry sybo syph yams yaps yips yobs