C212212121212113313221323131323131323132322331323132233132213131   >>    C21221212121211331322132313132313132313232233132313223313221313   <<    C212212121212113313221323131323131323132322331323132233132213133   >>      C212212121212113313221323131323131323132322331323132233132213132   >>