R6n h5y o0f "U2r:芯"
J2p t0o n8n
J2p t0o s4h
D2f s7n: M2k t1e r3o b3s o0f t1e r7s t0o c5e a1d h1t e3r o0r t1e b4n a0t t1e b4m.
L4d: (c1r) = d8e w2h l4t r6n, (p2v) = d8e w2h p7g r6n, m-1m = m3r e2t.