Odsville has five firms – Alfloo, Bzygoo, Czechy, Drjbna and Elavalaki. Each of these firms was founded in some year and also closed down a few years later. Each firm raised Rs. 1 crore in its first and last year of existence. The amount each firm raised every year increased until it reached a maximum, and then decreased until the firm closed down. No firm raised the same amount of money in two consecutive years. Each annual increase and decrease was either by Rs. 1 crore or by Rs. 2 crores. The table below provides partial information about the five firms. Firm | First year of existence | Last year of existence | Total amount raised (Rs. crores) Alfloo | 2009 | 2016 | 21 Bzygoo | 2012 | 2015 | (not given) Czechy | 2013 | (not given) | 9 Drjbna | 2011 | 2015 | 10 Elavalaki | 2010 | (not given) | 13