Do you know these words?

• かたひじたち

  to get up onto one's elbow

• こしを　おとす

  to crouch down ; to bend one's knees

• じゅうしんを　ひくくする

  to bend one's knees

• てを　つく

  to prop oneself up with one's hands ; to put one's hand on (something)

• うちまたに　する

  to turn one's feet inward