( Repeat ( ( ( steps ( ( 2 and ) 3 ) ) ( at ( ( the rate ) ( of ( ( 12 breaths ) ( per ( ( ( minute ( for ( an adult ) ) ) and ) ( ( 20 breaths ) ( per ( minute ( for ( ( infants and ) ( small children ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NN Repeat)) (VP (VBZ steps) (NP (CD 2) (CC and) (CD 3)) (PP (IN at) (NP (NP (DT the) (NN rate)) (PP (IN of) (NP (NP (CD 12) (NNS breaths)) (PP (IN per) (NP (NP (NP (NN minute)) (PP (IN for) (NP (DT an) (NN adult)))) (CC and) (NP (NP (CD 20) (NNS breaths)) (PP (IN per) (NP (NP (NN minute)) (PP (IN for) (NP (NP (NNS infants)) (CC and) (NP (JJ small) (NNS children)))))))))))))) (. .)))
Repeat steps 2 and 3 at the rate of 12 breaths per minute for an adult and 20 breaths per minute for infants and small children.
(ROOT (S (NP (NP (DT The) (JJ normal) (NN respiratory) (NN rate)) (PP (IN per) (NP (NP (NN minute)) (PP (IN in) (NP (JJ adult) (NNS humans)))))) (VP (VBZ is) (NP (CD 12-18) (NNS breaths))) (. .)))