C212212121212113313221323131323131323132322331323132233132313331333132221321   >>    C21221212121211331322132313132313132313232233132313223313231333133313222132   <<    C212212121212113313221323131323131323132322331323132233132313331333132221323   >>      C212212121212113313221323131323131323132322331323132233132313331333132221322   >>